Answer:
x^2-x-20
Step-by-step explanation:
(-5+x)(x+ 4)
Follow these FOIL to get to the answer!
First - combine the first number or letter in each parenthesis.
(-5+x)(x+ 4)
-5x
Outer - combine the outer number or letter in each parenthesis.
(-5+x)(x+ 4)
-20
Inner - combine the inner number or letter in each parenthesis.
(-5+x)(x+ 4)
x^2
Last - combine the last number or letter in each parenthesis.
(-5+x)(x+ 4)
4x
Now combine each FOIL answer to get to the answer!(and remember to do it in order)
Answer:
Step-by-step explanation:
Use FOIL (a + b)(c + d) = ac + ad + bc + bd:
(-5 + x)(x + 4)
= (-5)(x) + (-5)(4) + (x)(x) + (x)(4)
= - 5x + (-20) + x² + 4x combine like terms
= x² + (-5x + 4x) + (-20)
= x² + (-1x) + (-20)
= x² -x - 20
